dark line along the back of a shrimp is actually part of its digestive tract.
Depending on the shrimp and what it has eaten, the tract may appear dark, brown, gray, or almost black.
It can contain digestive material and other contents from the shrimp’s digestive system.
That doesn’t automatically mean the shrimp is spoiled or unsafe.
Do You Have to Remove It?
Not necessarily.
The digestive tract is generally considered safe to eat when shrimp have been properly handled and thoroughly cooked.
However, many people choose to remove it
